the file org-export-latex.el has been renamed to org-latex.el.
I think some of you might have
(require 'org-export-latex)
in your setup, this needs to be changed.
Also, after pulling from the git repo,
running
make clean
make
to produce the correct autoloads will be important.

Hi Carsten,

I did as above and additionally removed any latex stuff from
my .emacs (org-export-latex-classes and org-export-latex-default-
class).

You can leave the variables in, they are still unchanged. Just
change the require statement.